id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-15581	Liang, Haibo; Jiang, Xin; Yang, Yi; Zou, Jialing	Intelligent Identification Technology of Stratum Sub-Layer Based on Multi-Parameter Integration of Logging While Drilling	2023	10	.pdf	application/pdf	6063	351	54	① Pre-treating the element logging parameters, manually removing elements with less content, and conducting 3𝜎 standard de-noising and five-point three-time smoothing for drilling engineering parameters, as well as combining with element logging parameters to form new data samples; ② Dividing the obtained data samples into training sets and test sets according to a certain proportion, and setting the parameters of each model and conducting model training; ③ Inputting the test set into each model, comparing the prediction effect of different models through evaluation indicators, and selecting the optimal prediction model; ④ Optimizing the input parameters of the optimal model, and taking a well in the study block as an example to apply and verify the model to get the result of sub-layer identification. Data Processing There were 17 characteristics in element logging data, including extremely low element characteristics V, Ni, and Sr.	cache/ajst-15581.pdf	txt/ajst-15581.txt